Sink mat



FIG. 1 is a perspective view of a sink mat, showing my new design;

FIG. 2 is another perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a partial enlarged view of FIG. 1 ;

FIG. 6 is a partial enlarged view of FIG. 2 ;

FIG. 7 is a partial enlarged view of FIG. 3 ; and,

FIG. 8 is a partial enlarged view of FIG. 4 .

The broken lines in the figures are for the purposes of illustratingportions of the sink mat, which form no part of the claimed design.

CLAIM The ornamental design for a sink mat, as shown and described.